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IgA nephropathy (Berger disease)
This disease causes kidney inflammation that, over time, can interfere with the kidneys' ability to filter waste from the blood.
Insomnia
This disorder can make it hard to fall asleep, hard to stay asleep or both, even though you have the chance for enough sleep. It can drain your energy.
Interstitial cystitis
Bladder pain and urinary frequency flare with certain triggers if you have this condition. Learn about treatments and self-care.
Intestinal obstruction
A blocked intestine needs prompt medical care. Learn about symptoms and the wide range of causes for this serious but treatable digestive disorder.
Kidney infection
A urinary tract infection that travels to the kidneys can be dangerous. Know the symptoms and when to get prompt medical treatment.
Kidney stones
Learn about the symptoms, risks, causes and treatment of this often intensely painful condition.
Low sperm count
Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and treatment.
Lynch syndrome
Learn about this condition caused by inherited genes that increase the risk of colon cancer, endometrial cancer and other kinds of cancer.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Metachromatic leukodystrophy
This rare genetic disorder causes fatty substances (sulfatides) to build up in your brain and nervous system, causing progressive loss of nerve function.
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